Fixed #12512. Changed ModelForm to stop performing model validation on fields that are not part of the form. Thanks, Honza Kral and Ivan Sagalaev.

This reverts some admin and test changes from [12098] and also fixes #12507, #12520, #12552 and #12553.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12206 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/auth/forms.py

@@ -1,4 +1,4 @@
-from django.contrib.auth.models import User, UNUSABLE_PASSWORD
+from django.contrib.auth.models import User
 from django.contrib.auth import authenticate
 from django.contrib.auth.tokens import default_token_generator
 from django.contrib.sites.models import Site
@@ -21,12 +21,6 @@ class UserCreationForm(forms.ModelForm):
         model = User
         fields = ("username",)
 
-    def clean(self):
-        # Fill the password field so model validation won't complain about it
-        # being blank. We'll set it with the real value below.
-        self.instance.password = UNUSABLE_PASSWORD
-        super(UserCreationForm, self).clean()
-
     def clean_username(self):
         username = self.cleaned_data["username"]
         try:
@@ -40,9 +34,15 @@ class UserCreationForm(forms.ModelForm):
         password2 = self.cleaned_data["password2"]
         if password1 != password2:
             raise forms.ValidationError(_("The two password fields didn't match."))
-        self.instance.set_password(password1)
         return password2
 
+    def save(self, commit=True):
+        user = super(UserCreationForm, self).save(commit=False)
+        user.set_password(self.cleaned_data["password1"])
+        if commit:
+            user.save()
+        return user
+
 class UserChangeForm(forms.ModelForm):
     username = forms.RegexField(label=_("Username"), max_length=30, regex=r'^\w+$',
         help_text = _("Required. 30 characters or fewer. Alphanumeric characters only (letters, digits and underscores)."),